This CL replaces user_manager::UserID with AccountId.

chrome/browser/extensions/api/file_system/file_system_api_unittest.cc

 // Copyright (c) 2012 The Chromium Authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include "chrome/browser/extensions/api/file_system/file_system_api.h"
 
 #include <vector>
 
 #include "base/files/file_path.h"
 #include "base/run_loop.h"
@@ skipping 348 matching lines @@
 TEST_F(FileSystemApiConsentProviderTest, ForKioskApps) {
   // Non-component apps in auto-launch kiosk mode will be granted access
   // instantly without asking for user consent, but with a notification.
   {
     scoped_refptr<Extension> auto_launch_kiosk_app(
         test_util::BuildApp(ExtensionBuilder().Pass())
             .MergeManifest(DictionaryBuilder()
                                .SetBoolean("kiosk_enabled", true)
                                .SetBoolean("kiosk_only", true))
             .Build());
-    user_manager_->AddKioskAppUser(auto_launch_kiosk_app->id());
-    user_manager_->LoginUser(auto_launch_kiosk_app->id());
+    user_manager_->AddKioskAppUser(
+        AccountId::FromUserEmail(auto_launch_kiosk_app->id()));
+    user_manager_->LoginUser(
+        AccountId::FromUserEmail(auto_launch_kiosk_app->id()));
 
     TestingConsentProviderDelegate delegate;
     delegate.SetIsAutoLaunched(true);
     ConsentProvider provider(&delegate);
     EXPECT_TRUE(provider.IsGrantable(*auto_launch_kiosk_app));
 
     ConsentProvider::Consent result = ConsentProvider::CONSENT_IMPOSSIBLE;
     provider.RequestConsent(*auto_launch_kiosk_app.get(), volume_,
                             true /* writable */,
                             base::Bind(&OnConsentReceived, &result));
     base::RunLoop().RunUntilIdle();
 
     EXPECT_EQ(0, delegate.show_dialog_counter());
     EXPECT_EQ(1, delegate.show_notification_counter());
     EXPECT_EQ(ConsentProvider::CONSENT_GRANTED, result);
   }
 
   // Non-component apps in manual-launch kiosk mode will be granted access after
   // receiving approval from the user.
   scoped_refptr<Extension> manual_launch_kiosk_app(
       test_util::BuildApp(ExtensionBuilder().Pass())
           .MergeManifest(DictionaryBuilder()
                              .SetBoolean("kiosk_enabled", true)
                              .SetBoolean("kiosk_only", true))
           .Build());
-  user_manager_->KioskAppLoggedIn(manual_launch_kiosk_app->id());
+  user_manager_->KioskAppLoggedIn(
+      AccountId::FromUserEmail(manual_launch_kiosk_app->id()));
   {
     TestingConsentProviderDelegate delegate;
     delegate.SetDialogButton(ui::DIALOG_BUTTON_OK);
     ConsentProvider provider(&delegate);
     EXPECT_TRUE(provider.IsGrantable(*manual_launch_kiosk_app));
 
     ConsentProvider::Consent result = ConsentProvider::CONSENT_IMPOSSIBLE;
     provider.RequestConsent(*manual_launch_kiosk_app.get(), volume_,
                             true /* writable */,
                             base::Bind(&OnConsentReceived, &result));
@@ skipping 19 matching lines @@
     base::RunLoop().RunUntilIdle();
 
     EXPECT_EQ(1, delegate.show_dialog_counter());
     EXPECT_EQ(0, delegate.show_notification_counter());
     EXPECT_EQ(ConsentProvider::CONSENT_REJECTED, result);
   }
 }
 #endif
 
 }  // namespace extensions